Revolution for cats is an easy to use, topical treatment that kills fleas, flea eggs, ear mite. In addition, it helps with heartworm control as well as the spread of parasitic worms like roundworm and hookworm. This monthly solution for tick and flea prevention for cats is FDA-approved and safe to use. Applied to the base of your pet's neck, Revolution is a quick drying, a non-greasy medication that seeps into the pet’s skin to more efficiently distribute the medicine all across your pet's body.